To determine : Based on the operations under which the set of polynomials with one variable and real coefficients is closed like the set of whole numbers, the set of integers, or the set of rational numbers.
The set of polynomials with one variable and real coefficients is similar to the set of integers and the set of rational numbers on the basis of the operations under which it is closed.
Given information :
The set of polynomials with one variable and real coefficients.
Explanation :
A polynomial is said to be closed in an operation if the resultant of the operation is another polynomial.
The sum of
The difference of
The product of
The quotient of
Thus, the set of polynomials with one variable and real coefficients are closed in addition, subtraction and multiplication but not in division.
In case of whole numbers, in subtraction the difference can be negative and in division the quotient can be a fraction or decimal. So, the set of whole numbers is closed under addition and multiplication only.
The set of integers and the set of rational expressions are also closed under addition, subtraction and multiplication.
Therefore, the set of polynomials with one variable and real coefficients is like the set of integers and the set of rational numbers on the basis of the operations under which it is closed.
Chapter 5 Solutions
EBK ALGEBRA 2
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